SUN HYDRAULICS
DMDADRN528

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics DMDADRN528 (DMDADRN528) is a solenoid-operated 3-way, 2-position cartridge valve designed for high-performance hydraulic systems. This direct-acting, balanced spool directional valve features a robust construction that is fatigue rated for up to 5000 psi (350 bar) service, ensuring reliability under demanding conditions. The valve's spools B and R are closed during the transition between two positions to enhance performance limits while sacrificing some capacity. This design choice makes it particularly effective as pilot controls where capacity is less critical but speed and consistency of response are paramount. The DMDADRN528 operates without needing a minimum hydraulic pressure, making it versatile in various applications. It incorporates manual overrides with detent mechanisms designed for temporary actuation, and these manual controls have a mechanical life expectancy of around 7,000 cycles. The use of EPDM seals in certain configurations makes the cartridge suitable for systems using phosphate ester fluids; however, these seals must be protected from exposure to petroleum-based fluids that could cause damage. This model uses a wet armature design where the working fluid surrounds the armature, potentially affecting performance if the coil remains energized for extended periods due to heat generation. The interchangeable coils with other Sun Series 1 solenoid products offer flexibility in maintenance and replacement processes. Additionally, the valve features Sun's floating style construction which minimizes internal parts binding caused by excessive installation torque or variations in cavity/cartridge machining. With capabilities like a maximum flow capacity of 12 gpm (45 L/min), quick response times typically around 50 ms, and precise control features such as switching frequency up to 15,000 cycles/hr and maximum leakage at stringent levels, the DMDADRN528 is equipped to handle sophisticated hydraulic control tasks efficiently and reliably.